mail error cocoa 512 can't delete messages

Hi Michael,

NSFileWriteUnknownError = 512

Not certain, but this can fix myriad Mail problems...

Safe Boot from the HD, (holding Shift key down at bootup), it will try to repair your Disk Directory while the spinning radian is happening, so let it go, run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, then move this folder & file to the Desktop.

Move this Folder to the Desktop...

/Users/YourUserName/Library/Caches/Mail/

Move this file to the Desktop...

/Users/YourUserName/Library/Mail/Envelope Index

Reboot.

If that doesn't do it and you can afford to redo all your Rules, try these & reboot...

/Users/YourUserName/Library/Mail/MessageRules.plist

/Users/YourUserName/Library/Mail/MessageRules.plist.backup

Note, in 10.5 & up /Users/YourUserName/Library/Caches/Mail/ may or may not exist.

I'm not a computer expert. Is there any easy way to do what you're trying to explain. All those steps scare the heck out of me. I can't afford to have my computer crash.